New hard drive

I was wondering if anyone had some good ideas on installing a new hard drive. I want to take all the info from my old drive and put it on the new drive. I don’t want to run a slave, because I will be using the old drive to setup another computer. I could try going through the network, but I would rather another method. The other problem I have is that NT is stating that my system can only take a 7 gig drive. Anyway around this?